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MP Rev. 3 - Operating Instructions

During maintenance operations external

personnel is not allowed.

Maintenance operations that are not described in this
manual must be made only by special personnel
authorized by Calpeda S.p.A.
For further technical information regarding the use or
the maintenance of the device, contact Calpeda
S.p.A.

8.1 Routine maintenance

Before every maintenance operations
disconnect the power supply and make sure
that the device could not accidentally operate.
The pump may have been immersed in
hazardous

substances

products

emanating toxic gases, or may be located in
an environment which is toxic due to other
reasons;

make

sure

all

necessary

precautionary measures are taken to avoid
accidents.

Any pumps that require inspection/repair must be
drained and carefully cleaned inside and outside
before dispatch/submission.

Hose down all accessible parts with a jet of water.
If  there  is  a  risk  of  freezing,  take  the  pump  out  of  the
water and leave in a dry place.
When  used  with  muddy  liquids,  run  the  pump  briefly
with  clean  water  to  remove  all  deposits  immediately
after use or before a period of inactivity.

8.2 Dismantling the system

Close the suction and delivery gate valves and drain
the pump casing before dismantling the pump.

8.3. Dismantling the pump

For disassembly and reassembly, refer to the cross-
section drawing (paragraph 12.2 Annexes).

The pump function can be impaired by erroneous
procedure or tampering with internal parts.

To  inspect  the  impeller  (28.00),  to  clean  the  internal
parts  and  to  check  whether  the  impeller  turns  freely
when  moved  by  hand,  remove  the  screws  15.70  or
strainer 15.50, the screws (14.24) pump casing (14.00).
To dismantle the impeller remove the nut (28.04).
Others parts should not be dismantled.

8.4. Mechanical seal inspection

If the mechanical seal (36.00) and the oil chamber are
to be inspected, follow these instructions.

CAUTION: there may be slight pressure in
the oil chamber.

Care must be taken to avoid a sudden spurting
of oil.

Once the plug (34.08) with washer have been removed,
adjust the hole to the downward position and empty the
chamber completely.

Do not dispose of the waste oil in the enviroment.

The mechanical seal (36.00) can be inspected by
removing the screws (70.18).
When re-filling with fresh oil, remember that the

chamber  must  not  be  completely  filled;    a  sufficient
quantity  of  air  must  remain  inside  it  in  order  to
compensate  for  overpressure  caused  by  thermic
dilation of the oil.
The quantity of oil to be inserted in the chamber is:
0,04 litres
Use  white  oil  suitable  for  food  machinery  and
pharmaceutic use.

9. DISPOSAL

European Directive

2012/19/EU (WEEE)

The final disposal of the device must be done by spe-
cialized company.
Make sure the specialized company follows the clas-
sification of the material parts for the separation.
Observe the local regulations and dispose the device
accordingly with the international rules for environ-
ment protection.

10 SPARE PARTS
10.1 Spare-parts request

When ordering spare parts, please quote their desi-
gnation, position number in the cross section drawing
and rated data from the pump name plate (type, date
and serial number).

Any

pumps that require inspection/repair

must be drained and carefully cleaned inside
and outside before dispatch/submission.

Hose down all accessible parts with a jet of water.

The spare parts request shall be sent to CALPEDA
S.p.A. by phone, fax, e-mail.

Nr. Designation

OFF

14.00 Pump casing

14.02 External jacket

14.20 Casing gasket

14.24 Screw

15.50 Strainer